© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > TMOV® and iTMOV® Varistor Series
Ratings & Specifications
TMOV® Varistor
Lead–free And RoHS
Compliant Models
iTMOV® Varistor
Lead–free and RoHS
Compliant Models Disc
Diameter
Maximum Rating (85°C) Specifications (25°C)
Continuous Transient Varistor
Voltage at
1mA Test
Current
Maximum
Clamping
Voltage
8/20µs
Typical
Capaci-
tance
f = 1MHz
AC
Volts
DC
Volts
Energy
2ms
Peak Surge
Current 8/20µs
Part
Number Branding Part
Number Branding VM(AC)RMS VM(DC) WTM
ITM 1 ×
Pulse
ITM 2 ×
Pulse
VN(DC)
Min
VN(DC)
Max VCIPK C
(mm) (V) (V) (J) (A) (A) (V) (V) (A) (pF)
TMOV14RP115E P4T115E TMOV14RP115M P4T115M
14 115 150 35 6000 4500 162 198 300 50 110 0
TMOV20RP115E P2T115E TMOV20RP115M P2T115M
20 115 150 52 10000 6500 162 198 300 100 2400
TMOV14RP130E P4T130E TMOV14RP130M P4T130M
14 130 170 50 6000 4500 184.5 225.5 340 50 1000
TMOV20RP130E P2T130E TMOV20RP130M P2T130M
20 130 170 100 10000 6500 184.5 225.5 340 100 1900
TMOV14RP140E P4T140E TMOV14RP140M P4T140M
14 140 180 55 6000 4500 198 242 360 50 900
TMOV20RP140E P2T140E TMOV20RP140M P2T140M
20 140 180 110 10000 6500 198 242 360 10 0 1750
TMOV14RP150E P4T150E TMOV14RP150M P4T150M
14 150 200 60 6000 4500 216 264 395 50 800
TMOV20RP150E P2T150E TMOV20RP150M P2T150M
20 150 200 120 10000 6500 216 264 395 10 0 1600
TMOV14RP175E P4T175E TMOV14RP175M P4T175M
14 175 225 70 6000 4500 243 297 455 50 700
TMOV20RP175E P2T175E TMOV20RP175M P2T175M
20 175 225 135 10000 6500 243 297 455 100 1400
TMOV14RP200E P4T200E TMOV14RP200M P4T200M
14 200 260 75 6000 4500 283 345 530 50 630
TMOV20RP200E P2T200E TMOV20RP200M P2T200M
20 200 260 154 10000 6500 283 345 530 10 0 1250
TMOV14RP230E P4T230E TMOV14RP230M P4T230M
14 230 300 80 6000 4500 324 396 595 50 550
TMOV20RP230E P2T230E TMOV20RP230M P2T230M
20 230 300 160 10000 6500 324 396 595 100 110 0
TMOV14RP250E P4T250E TMOV14RP250M P4T250M
14 250 320 100 6000 4500 351 429 650 50 500
TMOV20RP250E P2T250E TMOV20RP250M P2T250M
20 250 320 170 10000 6500 351 429 650 100 1000
TMOV14RP275E P4T275E TMOV14RP275M P4T275M
14 275 350 110 6000 4500 387 473 710 50 450
TMOV20RP275E P2T275E TMOV20RP275M P2T275M
20 275 350 190 10000 6500 387 473 710 100 900
TMOV14RP300E P4T300E TMOV14RP300M P4T300M
14 300 385 125 6000 4500 423 517 775 50 400
TMOV20RP300E P2T300E TMOV20RP300M P2T300M
20 300 385 250 10000 6500 423 517 775 10 0 800
TMOV14RP320E P4T320E TMOV14RP320M P4T320M
14 320 420 136 6000 4500 459 561 840 50 380
TMOV20RP320E P2T320E TMOV20RP320M P2T320M
20 320 420 270 10000 6500 459 561 840 100 750
TMOV14RP385E P4T385E TMOV14RP385M P4T385M
14 385 505 150 6000 4500 558 682 1025 50 360
TMOV20RP385E P2T385E TMOV20RP385M P2T385M
20 385 505 300 10000 6500 558 682 1025 100 700
TMOV14RP420E P4T420E TMOV14RP420M P4T420M
14 420 560 160 6000 4500 612 74 8 112 0 50 300
TMOV20RP420E P2T420E TMOV20RP420M P2T420M
20 420 560 320 10000 6500 612 74 8 112 0 100 600
TMOV14RP460E P4T460E TMOV14RP460M P4T460M
14 460 610 180 6000 4500 675 825 1240 50 220
TMOV20RP460E P2T460E TMOV20RP460M P2T460M
20 460 610 360 10000 6500 675 825 1240 100 200
TMOV14RP510E P4T510E TMOV14RP510M P4T510M
14 510 670 185 6000 4500 738 902 1355 50 200
TMOV20RP510E P2T510E TMOV20RP510M P2T510M
20 510 670 325 10000 6500 738 902 1355 100 350
TMOV14RP550E P4T550E TMOV14RP550M P4T550M
14 550 715 190 6000 4500 819 10 01 1500 50 180
TMOV20RP550E P2T550E TMOV20RP550M P2T550M
20 550 715 360 10000 6500 819 10 01 1500 100 300
Absolute Maximum Ratings
Continuous TMOV® and iTMOV® Varistor Series Units
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS) 115 to 750 V
Transient:
Peak Pulse Current (ITM) - For 8x20µs Current Wave, single pulse 6,000 to 10,000 A
Single-Pulse Energy Capability - For 2ms Current Wave 35 to 480 J
Operating Ambient Temperature Range (TA) -55 to +85 °C
Storage Temperature Range (TSTG) -55 to +125 °C
Temperature Coefficient (αV) of Clamping Voltage (VC) at Specified Test Current <0.01 %/°C
Hi-Pot Encapsulation (COATING Isolation Voltage Capability) 2,500 V
Thermal Protection Isolation Voltage Capability (when operated) 600 V
COATING Insulation Resistance 1,000 MΩ
Indicator Lead Rating (Lead-3 - iTMOV® varistor only):
Continuous RMS current 100 mA
Surge Current, 8/20µs 10,000 A
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
• For ratings of individual members of a series, see Device Ratings and Specifications chart